Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6d568f56e12486…

MALICIOUS

PDF

187.4 KB Created: 2015-07-23 20:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e8f2dae2534a29c0ccaa27ef2a29a2ea SHA-1: 8b05ad48f5fd2d71c441e67effd7101a899a28cd SHA-256: 3d6d568f56e124863b42c2ff00074d4ab4601a442feecd3ade0d43e0b74d28da
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The primary malicious IOC is the embedded URL, which likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, and the document body was not sufficiently readable to infer further intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Dropper.Agent-7493898-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493898-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D1%81%D1%82%D1%80%D0%BE%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D1%81%D1%82%D0%B2%D0%BE+%D0%B4%D0%BE%D0%BC%D0%BE%D0%B2+%D0%BF%D0%BE%D0%B4+%D0%BA%D0%BB%D1%8E%D1%87+%D0%B8%D0%B7+%D0%B3%D0%B0%D0%B7%D0%BE%D0%B1%D0%B5%D1%82%D0%BE%D0%BD%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184486_skachat_gta_san_andreas_bez_modov_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184499_scenariy_zakruytiya_spartakiaduy.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184379_korporativnaya_socialnaya_otvetstvennost_uchebnik_skachat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000249cc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x249CC 3556 bytes
font_01_sfnt_off0002574f.bin
ab7df767ce94a08cfb639077571919f9b3a427006c1740c867172afba390ee16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2574F 14540 bytes
font_02_sfnt_off00028489.bin
13c118e1b16d932ee74b7fb21ba03c9b98cbe48dfb6f44f054098b58aeb7df02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28489 14468 bytes
font_03_sfnt_off0002af39.bin
0777831fc1aa6fe85605bd8343be79158cace6939a1ce5771bd8e9def40faa0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF39 7100 bytes
font_04_sfnt_off0002c3d6.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3D6 6084 bytes
font_05_sfnt_off0002d36b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D36B 3752 bytes

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